Hypoparathyroidism occurs as a result ofa) Idiopathic atrophy of parathyroidsb) Following surgeryc) Thyroditis with secondary atrophy of parathyroidsd) All of the above

Mostly due to removal of the parathyroid glands or infarction due to vascular injury.* Vascular injury is more impoant.* Cases usually present 2-5 days after operation with symptoms of hypocalcemia (circumoral and fingeip numbness and tingling tetany, carpopedal spasm and laryngeal stridor) * Treatment with oral calcium and vitamin D supplements* IV calcium gluconate may be required in severe cases.